# Grindhog vs Caliburr

The clearest difference is in-app purchases: Grindhog at none against Caliburr's 2. Grindhog also leads on update cadence (every 6 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Caliburr sells 2 in-app purchases, starting at $1.99 per month. Grindhog asks for nothing beyond the download.

Grindhog ships an update every 6 days, Caliburr fortnightly. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Grindhog | Caliburr |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Fortnightly |
| Size | 25 MB | 49 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Johannes Hermann Hoffart](https://appshunter.io/developer/1844213112) | [Vellapps LLC](https://appshunter.io/developer/1365654150) |

## What reviewers say

### Grindhog

[App page](https://appshunter.io/ios/app/grindhog/id6753727341)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Caliburr

[App page](https://appshunter.io/ios/app/caliburr/id6761644774)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Caliburr Backer - Monthly | $1.99 | per month |
| Caliburr Backer - Annual | $14.99 | per year |


## Frequently asked questions

### Is Grindhog free?

Grindhog is free to download, with no in-app purchases.

### Is Caliburr free?

Caliburr is free to download, with in-app purchases available.

### Do Grindhog or Caliburr have ads?

Neither Grindhog nor Caliburr shows ads.

### Which is updated more often, Grindhog or Caliburr?

Grindhog ships an update every 6 days, and Caliburr fortnightly. Most recently, Grindhog was updated on October 14, 2026 and Caliburr on October 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*